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The AAPG/Datapages Combined Publications Database
Showing 2,093 Results. Searched 200,357 documents.
Productive Low Resistivity Well Logs of the Offshore Gulf of Mexico, 1993 - Log Examples
New Orleans Geological Society
..., spontaneous potential (SP), gamma-ray, resistivity, density porosity, and neutron porosity logs, initial potential, and cumulative production...
1993
Log Abbrevations, Log Names, and Title Page
George B. Asquith, Charles R. Gibson
AAPG Special Volumes
... index SSP - static spontaneous potential SSP = -K log (Rmf/Rw) Swirr - irreducible water saturation Swa - water saturation of uninvaded zone (Archie...
1982
The Spontaneous Potential Log: Chapter II
George B. Asquith, Charles R. Gibson
AAPG Special Volumes
.... SP deflection with resistivity of the mud filtrate (Rmf) much greater than formation water (Rw). SSP (static spontaneous potential) at the top...
1982
Establishing The Base Of Underground Sources Of Drinking Water (10,000 ppm) Using Geophysical Logs And Chemical Reports In The Southern San Joaquin Basin, CA
Search and Discovery.com
N/A
Comparison of Electrical Logs and Physical Parameters of Marine-Sediment Cores: ABSTRACT
Frank B. Chmelik, Arnold H. Bouma, Richard Rezak
AAPG Bulletin
... 2034 53 9. (September) Spontaneous potential and modified point resistivity logs were made from select cores of marine sediments. The logs have been...
1969
Establishing the Base of Underground Sources of Drinking Water (USDW) using Geophysical Logs and Chemical Reports in the Southern San Joaquin Basin, California; #80468 (2015)
David Kong and Janice Gillespie
Search and Discovery.com
... porosity method has a smaller error than the spontaneous potential method, therefore, the resistivity-porosity method is chosen for the analysis...
2015
Recognition of Low Resistivity, High Permeability Reservoir Beds in the Travis Peak and Cotton Valley of East Texas
James R. Turner
GCAGS Transactions
... in the formation instead of tighter rock. The resistivity of the formation water derived from the spontaneous potential in 0.044 ohm-meters. The gamma ray...
1997
Appendix
George B. Asquith
AAPG Special Volumes
.... Obtained from a table of Rw values or calculated from the Spontaneous Potential log or by the Rwa method (see Asquith, 1982). Rmf -- Resistivity...
1985
The Spontaneous Potential (SP) Log
John H. Doveton
Special Publications of SEPM
... = sandy siltstone ; sh = shale FIG. 14-- Spontaneous potential (SP), resistivity, and gamma-ray logs of a LansingKansas City Group (Pennsylvanian)section...
1994
The Effect of KOH Lignosulfanate Drilling Muds on Spontaneous Potential Log Interpretation
P. J. Cockcroft, Imanudin, J. A. Owens, Basuki Wiwoho
Indonesian Petroleum Association
... if these corrections are not made. A previously unpublished method for interpretation of Spontaneous Potential logs is presented. A further discussion of responses...
1986
A New Method for Volume of Shale Evaluation Using the Well Log Resistivity Invasion Profile
Robert K. Svec
GCAGS Transactions
... the required input logs exist, such as gamma ray (GR), spectral GR, spontaneous potential (SP), neutron-density (ND), resistivity (RES), etc...
2025
Basic Relationships of Well Log Interpretation: Chapter I
George B. Asquith, Charles R. Gibson
AAPG Special Volumes
... values. Formation water resistivity (Rw) is also determined from the spontaneous potential log (discussed in Chapter II) or can be calculated in water...
1982
Predicting Total Dissolved Solid Concentrations in Appalachian Basin Formation Waters from Spontaneous Potential Logs; #90131 (2011)
C. Doolan
Search and Discovery.com
...Predicting Total Dissolved Solid Concentrations in Appalachian Basin Formation Waters from Spontaneous Potential Logs; #90131 (2011) C. Doolan...
2011
Correlation of Wireline Logs with a Shaly Sandstone Sequence, Red Fork Sandstone, Payne County, Oklahoma: ABSTRACT
Michael D. Kuykendall
AAPG Bulletin
... suppressed spontaneous-potential curves, incomplete bed definition, misleadingly low resistivity, and no consistent, direct quantitative correlation...
1983
Log Interpretation of the Tertiary and Upper Cretaceous of Wyoming and Surrounding Areas
J. G. Patchett
Wyoming Geological Association
... connate water saturation, F the formation resistivity factor, Rw the formation water resistivity, and Rt the formation resistivity beyond the invaded zone...
1961
"Productive Low Resistivity Well Logs of the Offshore Gulf of Mexico": Causes and Analysis
Harold L. Darling, Robert M. Sneider
New Orleans Geological Society
... 1Chart showing core data, mud-log data, spontaneous potential (SP), gamma-ray, caliper, resistivity, conductivity, sonic, and bulk density logs, initial...
1993
Abstract: Codell Continuous Oil Accumulation in the Northern Denver Basin as Defined by Resistivity, Density, and SP Logs; #91201 (2022)
Stephen P. Cumella
Search and Discovery.com
... be defined by resistivity, spontaneous potential (SP), and density logs. Updip from the oil accumulation, average deep resistivity of the Codell decreases...
Unknown
Atkinson Field: Barrier Bar or Channel-Fill Sandstone? Evidence from Geologic Well-Log Analysis
Alvin L. Schultz, Gary F. Stewart
Bulletin of South Texas Geological Society
... of Atkinson sand. Resistivity in ohm-meters. In formations where water saturation is 100% and effects of hydrocarbons on spontaneous-potential logs...
1991
Determining Pore-Water Salinities from SP Response: A Thermodynamic Reevaluation: ABSTRACT
Jeffrey S. Hanor
AAPG Bulletin
... solubility, and in deducing pathways of fluid migration. Calculation of salinity from the spontaneous potential (SP) response of borehole logs using...
1984
Comparison of Electrical Logs and Physical Parameters of Marine Sediment Cores
Frank B. Chmelik, Arnold H. Bouma, Richard Rezak
GCAGS Transactions
...), Spontaneous potential and modified point resistivity logs were made from select cores of marine sediments. The logs have been compared with cone...
1969
Nomenclature
George B. Asquith
AAPG Special Volumes
...Nomenclature George B. Asquith 1990 58 59 CN 31: Log Evaluation of Shaly Sandstones: A Practical Guide SP - spontaneous potential log GR - gamma ray...
1990
Shaly Sand Analysis: Chapter 3
George B. Asquith
AAPG Special Volumes
... analysis procedures used to correct data from logs to yield the effective water saturation (Swe) of shaly sands. Water saturation formulas...
1990
Identification of Salt from Resistivity and Radioactivity Logging Methods
New Orleans Geological Society
...-------------------------- Figure II. Spontaneous potential, short normal, long normal, and lateral resistivity log responses in salt End_Page 9...
1960
Advancements in Exploration Technique Using Log Derived Data Factors
Bob Jones
Wyoming Geological Association
... water salinity variations was only slightly recognized, but it was obvious that the spontaneous potential curves of electric logs could be used to trace...
1962
Log Interpretation: Chapter VI
George B. Asquith, Charles R. Gibson
AAPG Special Volumes
... that the SP equation is: [EQUATION] Where: SP = spontaneous potential K = 60 + (0.133 x formation temperature) Rmf = resistivity of mud filtrate...
1982